With respect to hypochlorite, chlorate and perchlorate ions, choose the correct statement(s).

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The hypochlorite and chlorate ion disproportionate to give rise to identical set of ions

The hypochlorite ion oxidizes the sulphite ion.

The hypochlorite ion is the strongest conjugate base

The molecular shape of only chlorate ion is influenced by the lone pair of electrons of Cl

answer is A, B, D.

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Detailed Solution

Hypochlorite ion : $C l O^{Θ}$
Chlorate ion : $C l O_{3}^{Θ}$
Per chlorate ion : $C l O_{4}^{Θ}$
(A) Acidic order : $\overset{+ 1}{H C l O} < \overset{+ 5}{H C l O_{3}} < \overset{+ 7}{H C l O_{4}}$
Conjugate base order : $C l O^{-} > C l O_{3}^{-} > C l O_{4}^{-}$
(B) Hypochlorite ion $C l O^{Θ}$ : Linear shape
Chlorate ion $C l O_{3}^{Θ}$ : Trigonal pyramidal shape
(C) $H C l O_{4}$ Central atom is $s p^{3}$ hybridised
$H C l O$ Central atom is $s p^{3}$ hybridised